1. Power supply voltage: DC005 is powered on the positive and negative pins or on the pin header, the power supply voltage is the same as the working voltage of the chip;
2. Crystal oscillator: 12M;
3. PCB board size: 8.9cm*4.3cm;
The baby is cost-effective and has the following characteristics:
1. Classic 51 minimum system, eliminating the trouble of wiring and welding;
2. All 40 pins are led out to facilitate expansion. ；
3. A 10K pull-up resistor is added to port P0, so users can operate port P0 more freely;
4. The ISP download port is led out independently to facilitate the download of AT89S5X series programs;
5. Support chips: STC89C5X, AT89S5X, STC12C5A60S2 STC11/10x series and chip pin compatible chips;
6. With a self-locking switch, it can flexibly control the on and off of the DC005 power supply of the system, which is convenient for users to carry out various tests (there is no on and off function for the power input of the pin header or DC3-10 seat);
7. Flexible power supply: It can be powered by ISP download port, can be powered by standard DC-005 interface, or can be powered by pin header.
8. Built-in parts design, saving space, pin numbers are marked on the board, convenient for wiring
Note: This item does not contain a single-chip microcomputer, please pay attention to this!
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